Newington, N.H.-based Simplex Technologies Inc. will manufacture a 4400-km undersea fiber optic cable system for AT&T's Pan American cable system, according to a $35 million contract between the two companies. Slated for operation in June 1998, the four-fiber SL-200 cable network will run from Panama to Chile, with connection points in Colombia, Ecuador and Peru. Simplex received an additional $10 million deal from AT&T to manufacture a similar system connecting the East Coast of the US with Land's End, Bermuda. The Bermuda network will employ 1400 km of cable and is slated for operation in October.